Moxa NA-4020 User Manual
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Remote I/O
RS-232/485 (Modbus/RTU) network adaptors
Serial Communication Parameters
Parity: None, Even, Odd
Data Bits: 7, 8
Stop Bits: 1, 2
Baudrate: 1200 to 115200 bps
Signals:
• NA-4020: Data+, Data-, Gnd, DIR
• NA-4021: TxD, RxD, Gnd
Data Bits: 7, 8
Stop Bits: 1, 2
Baudrate: 1200 to 115200 bps
Signals:
• NA-4020: Data+, Data-, Gnd, DIR
• NA-4021: TxD, RxD, Gnd
Software Features
Protocols: Modbus/RTU, Modbus/ASCII
Modbus Address: 00 to 99 (set by rotary switches)
Programming Library: MXIO DLL library for Windows; Supports
Visual Basic, Visual C++, Borland C++ Builder, .net, VB/VC.NET
Number of I/O Modules Supported: Max. of 32
Modbus Address: 00 to 99 (set by rotary switches)
Programming Library: MXIO DLL library for Windows; Supports
Visual Basic, Visual C++, Borland C++ Builder, .net, VB/VC.NET
Number of I/O Modules Supported: Max. of 32
Power Requirements
Power Input: 11 to 28.8 VDC, 24 VDC typical
Power Consumption: 60 mA typical @ 24 VDC
Current for I/O Modules: Max. 1.5 A @ 5 VDC
Power Consumption: 60 mA typical @ 24 VDC
Current for I/O Modules: Max. 1.5 A @ 5 VDC
Field Power
Rated Voltage: 11 to 28.8 VDC, 24 VDC typical
Current in Field Power Contact: Max. 10 A
Current in Field Power Contact: Max. 10 A
Isolation
System Power to I/O Driver: Optical isolation
Physical Characteristics
Dimensions: 45 x 99 x 70 mm (1.77 x 3.90 x 2.76 in)
Weight: 150 g
Weight: 150 g
Environmental Limits
Operating Temperature: -10 to 60°C (14 to 140°F)
Storage Temperature: -40 to 85°C (-40 to 185°F)
Ambient Relative Humidity: 5 to 95% (non-condensing)
Storage Temperature: -40 to 85°C (-40 to 185°F)
Ambient Relative Humidity: 5 to 95% (non-condensing)
Regulatory Approvals
Safety: UL508
EMC: CE IEC 61000-6-2, IEC 61000-6-4
Vibration: IEC-68-2-6 (2 g’s during operation)
EMC: CE IEC 61000-6-2, IEC 61000-6-4
Vibration: IEC-68-2-6 (2 g’s during operation)
Warranty
Warranty Period: 2 years
Details: See www.moxa.com/warranty
Details: See www.moxa.com/warranty
Specifications
99.0 mm (3.9 in)
99.0 mm (3.9 in)
60.0 mm (2.4 in)
70.0 mm (2.8 in)
70.0 mm (2.8 in)
30.0 mm
(1.2 in)
15.0 mm (0.6 in)
12.0 mm (0.5 in)
99.0 mm (3.9 in)
99.0 mm (3.9 in)
60.0 mm (2.4 in)
70.0 mm (2.8 in)
45.0 mm (1.8 in)
I/O Module
I/O Network Adaptor
Side View
Front View
Removable View
Side View
Front View
Dimensions
NA-4020/4021
0 1
2 3
4 5
6 7
CH0
CH0
CH0 CH0
ioLogik 4000
Modbus RS-485
NA-4020
SYS
TxD
RxD
TxD
RxD
I/O
Field
Power
0 1
2 3
4 5
6 7
SG
Field Power (0 VDC)
Field Power (24 VDC)
SG
24V 0V
0V 0V
24V 24V
System Power (0 VDC)
System Power (24 VDC)
System Power (24 VDC)
Field Power (0 VDC)
Field Power (24 VDC)
Shielding Ground
System Power (5 VDC)
System Power (GND)
System Bus
Non-isolation
Switching
Power